Abstract Background KAT6A (Arboleda-Tham) syndrome is a Mendelian disorder of the epigenetic machinery caused by pathogenic variants in the lysine acetyltransferase 6 A (KAT6A) gene. Intellectual disability and speech/language impairment (e. g. https://www.mariameetsanna.com/product-category/bride-of-gluttony-conditioner/